What county is Kingwood, TX in?

Kingwood, TX is mostly in Harris County, and Kingwood addresses also reach Montgomery County. Kingwood is a mailing address name, not a city, so the county depends on your street. Both Kingwood ZIP codes are centered inside the city limits of Houston.

Kingwood at a glance

Which counties are Kingwood ZIP codes in?

Residents are per ZIP code area; the county split of each ZIP is by share of its land, because the Census Bureau does not publish ZIP residents by county in the file we use.

Every Kingwood ZIP code has most of its land in Harris County; 77339 has 24% of its land in Montgomery County. Near a county line, check your address: the lookup runs in your browser and tells you how far you are from the line.

Is Kingwood a city?

No. Kingwood is the post office name for ZIP codes 77339 and 77345. It is not an incorporated city and not a census-designated place, so the Census Bureau publishes no boundary or population for Kingwood itself; the closest thing is the ZIP code areas named Kingwood. All Kingwood ZIP codes are centered inside a city or CDP: 77339 in Houston, 77345 in Houston. Inside those limits your city is that place, even when your mailing address says Kingwood.

That is why a search for Kingwood on our city lookup finds nothing: it only knows Census places. Use the ZIP code lookup or your location instead. Why ZIP codes and cities do not line up.

Cities and towns near Kingwood

• Atascocita: 4.9 mi from the center of the Kingwood ZIP codes, Harris County
• Humble: 5.9 mi from the center of the Kingwood ZIP codes, Harris County
• Woodbranch: 9.2 mi from the center of the Kingwood ZIP codes, Montgomery County
• Roman Forest: 9.5 mi from the center of the Kingwood ZIP codes, Montgomery County
• Porter Heights: 10 mi from the center of the Kingwood ZIP codes, Montgomery County
• Patton Village: 10 mi from the center of the Kingwood ZIP codes, Montgomery County

About Harris County

County seat: Houston. FIPS code 48201. Population 4,758,579. All Harris County facts.

Sources: Census 2020 ZCTA-county relationship file (county land shares); ACS 2019-2023 5-year (ZIP area residents); GeoNames, CC BY 4.0 (post office names); Census TIGER/Line 2024 (place limits). Data as of November 1, 2026. Not affiliated with USPS or any government agency.